Chennai vs Silchar
Side-by-side air quality comparison between Chennai and Silchar.
Live AQI from Open-Meteo CAMS (~45 km global model, updated hourly). Multi-year history from CPCB station data via aqinow.co pipeline (2016–2024, station-level daily records).
AQI Comparison
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chennai averaged an AQI of 68 while Silchar averaged 52 — a 16-point (31%) gap, with Chennai the more polluted and Silchar the cleaner of the two. On 352 days when both cities reported, Silchar was cleaner on 333 of them; the average daily gap was 48 AQI points.
Seasonality & days
Chennai peaks in December, while Silchar peaks in February. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Silchar was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Silchar 87 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Silchar has worsened by 11 AQI points (26.8%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Silchar hit AQI 89 at Tarapur (PCBA) on 2023-04-29.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Silchar spans 1 stations with a 0-point spread (min 47, max 47).